Five tech and internet stocks had accounted for 41% of the S&P 500’s advance this year

Quick, everybody to the other side of the boat. Red-hot technology and internet stocks were under sudden and heavy selling pressure Friday, jolting what had been a torrid run for the fast-growing shares in 2017. Big-cap tech stocks tumbled 3.5% in afternoon trading even as the broader U.S. stock market mostly had shrugged off the surprise outcome of […]